Wikileaks, though technically not a wiki, provides an easy means to disseminate information that some find it desirable to share against the wishes of those who find it desirable to keep secret. Aside from the morality of the leaking itself, such a service provides a look into the activities of...

Night Vision Challenge Mode:
At the mode selection screen hold Trigger and highlight "Training" or "Arcade".
Keep Trigger held and press Start 5 times. The sound of a gun will confirm
correct code entry. The game will begin at night and require the Night Vision
scope.